Chapter 4 Connecting to the Switch
Install an SFP Module into an SFP Module Slot
4-4
User Guide for the Catalyst Express 520 Switches
OL-12761-02
Install an SFP Module into an SFP Module Slot
Prerequisites
• Use only Cisco SFP modules. Each SFP module has an internal serial
EEPROM that is encoded with security information. This encoding provides
a way for Cisco to identify and validate that the SFP module meets the
requirements for the switch.
• Do not remove the dust plugs from the fiber-optic SFP module port or the
rubber caps from the fiber-optic cable until you are ready to connect the
cable. The plugs and caps protect the SFP module ports and cables from
contamination and ambient light.
Caution We strongly recommend that you do not install or remove fiber-optic SFP modules
with cables attached because of the potential damage to the cables, the cable
connector, or the optical interfaces in the SFP module. Disconnect all cables
before removing or installing an SFP module.
Removing and installing an SFP module can shorten its useful life. Do not remove
and insert SFP modules more often than is absolutely necessary.
Follow these steps:
Step 1
Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface on the chassis.
Step 2
Find the send (TX) and receive (RX) markings that identify the top side of the SFP module.
Note On some SFP modules, the send and receive (TX and RX) markings might be replaced
by arrows that show the direction of the connection, either send or receive (TX or
RX).
Step 3
Align the SFP module in front of the slot opening.
